#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int day12()
{
    int sum = 0;
    int count = 0;
    int expense = 0;
    do {
        scanf("%d", &expense);
        sum = sum + expense;
        count += 1;
    }while (count < 5);
    printf("sum = %d\n", sum);
    return 0;
}